code: def _copy_vars_and_ops_in_blocks(
      from_block: paddle.device.framework.Block,
      to_block: paddle.device.framework.Block,
  ):
      for var in from_block.vars:
          var = from_block.var(var)
          var_info = copy.deepcopy(get_variable_info(var))
          if isinstance(var, paddle.device.framework.Parameter):
              to_block.create_parameter(**var_info)
          else:
              to_block.create_var(**var_info)
  
      for op in from_block.ops:
          all_attrs = op.all_attrs()
          if "sub_block" in all_attrs:
              _sub_block = to_block.program._create_block()
              _copy_vars_and_ops_in_blocks(
                  all_attrs["sub_block"], _sub_block
              )
              to_block.program._rollback()
              new_attrs = {"sub_block": _sub_block}
              for key, value in all_attrs.items():
                  if key == "sub_block":
                      continue
                  new_attrs[key] = copy.deepcopy(value)
          else:
              new_attrs = copy.deepcopy(all_attrs)
  
          op_info = {
              "type": op.type,
              "inputs": {
                  input: [
                      to_block._find_var_recursive(var)
                      for var in op.input(input)
                  ]
                  for input in op.input_names
              },
              "outputs": {
                  output: [
                      to_block._find_var_recursive(var)
                      for var in op.output(output)
                  ]
                  for output in op.output_names
              },
              "attrs": new_attrs,
          }
          to_block.append_op(**op_info)
  
file_path: PaddleHub/paddlehub/compat/paddle_utils.py
imports: import contextlib
  import copy
  from typing import Callable
  from typing import List
  import paddle
  from paddle.framework import core
  from paddlehub.utils.utils import Version
label_desc: Use image node_id 8 for calling a global function with example usage: _copy_vars_and_ops_in_blocks(from_block, to_block) without return types